Panasonic KX-FM106 Operating Instructions Manual page 117

5 Turn the film cartridge over so that the "BACK" is
facing up.
6 Insert the new film cartridge by first placing the
front of the cartridge into the unit and then
lowering the "BACK" of the cartridge into place.
7 Close the cover securely by pushing down on the
dotted area at both ends.
≥The unit will check that there is no slack on the
film. The following message will be displayed.
Display:
For Fax Advantage Assistance, Call 1-800-435-7329.
PLEASE WAIT
Ink Film
Film
cartridge
117